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Finding the Fourth Proportional to 12,647.97, 17,449.11 and 7,339.59

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Solution

The fourth proportional to 12,647.97, 17,449.11 and 7,339.59 is: 10,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.97 : 17,449.11 = 7,339.59 : x
  2. Step 2: Convert to fraction form
    12,647.97/17,449.11 = 7,339.59/x
  3. Step 3: Cross multiply
    12,647.97x = 17,449.11 × 7,339.59
  4. Step 4: Simplify right side
    12,647.97x = 128,069,313.26
  5. Step 5: Solve for x
    x = 128,069,313.26/12,647.97
  6. Step 6: Final answer
    x = 10,125.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.